System of electrical distribution.



PATENTED JULY 23, 1907.

" J. W. AGHARD.

SYSTEM OF ELECTRICAL DISTRIBUTION. APPLICATION FILED APR.15,1905.

2 SHEETS-SHEBT 1.

PATENTED JULY 23, 1907.

J. W. AGHARD. SYSTEM OF ELECTRICAL DISTRIBUTION.

APPLICATION FILED APB.15. 1905.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

JOHN W. AOHARD, OF PHILADELPHIA, PENNSYLVANIA, ASS IGNOR TO THE ELECTRICSTORAGE BATTERY COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORA- 'TIONOF NEW JERSEY.

SYSTEM OF ELECTRICAL DISTRIBUTION.

Specificationof Letters Patent.

Patented J'u1y 23, 1907.

Application filed April 15,1905. Serial No. 265.795.

. trical Distribution, of which the following is a specification.

One object of the present invention is to provide simple, durable andreliable means for keepingthe floating voltage of a battery the same orsubstantially the same as the average voltage of the line on which it isfloated.

To this and other ends hereinafter set forth the invention, stated ingeneral terms, comprises the improvements to be presently described andfinally claimed.

The nature, characteristic features and scope of my invention will bemore fully understood from the following description taken in connectionwith the accompanying drawings forming part hereof and in which Figure1, is a diagrammatic view illustrating a systemof distribution embodyingfeatures of the invention, and Fig. 2, is a similar view illustrating amodification of the invention.

In the drawings 1 and 2, are the conductors which constitute adistribution circuit and extend from the generator 3, to a considerabledistance commensurate, for example, with the length of a trolley line.

4, indicates a translating device of which there may be a, number of anyvariety supplied from the circuit 12.

5, is a storage battery comprising a number of cells and connected orfloated across the distribution circuit 12, at a distance from thegenerator 3; for example, it may be located out toward the end of thetrolley line. Some of the cells'oi this battery, either singly or ingroups, are a'dapted to be placed both in series and parallel relationto the others; for example, at times of light or heavy load the averageline voltage is high or low and-it is desirable that the voltage of thebattery should be adjusted accordingly, and this can be advantageouslyaccomplished by putting some of its cells, either in groups or singly,in series or parallel relation to the others.

6, designates means for arranging the cells in such relations and adescription of these means will now be and points are arranged in thearcs of circles, whereas in Fig. 2, the contact strips andpoints arearranged in parallel lines and the arm 1. is movable, for example, bymeans of the screw 15, and the hand Wheel 16. When the arm is sopositioned that it rests upon the contacts aa the path of the current isby way of 17 all of the part or section 18, of the battery, conductor19, contact a, conductor 20, strip 7, bridge 13, to contact a, or froma, by 12, by strip 8, by conductor 21, to a, and thence by conductor 22,through the part 23, of the battery and by the conductor 24, to line.Thus it will be seen that all of the cells of the battery are connectedin series relation across the line. One end of the part l8, of thebattery is connected to the contact a, and to the strip 7, and one endof the pads 23, of the battery is connected to contact a, and strip 8,and intermediate cells or groups of cells of the respective parts 18 and23, of the battery are connected with the contact points bb, cc, etc.tion, it may be assumed that arm 11, is turned or moved so as to restupon the contacts f and f Under these conditions the path of the currentis from 17, by 25, f, 12, s, 21, 22, battery 23, 24, also by 19, 20, 13,conductor 26, to 24, thus the parts 18 and 23, of the battery are inparallel so that the battery voltage would be small compared to what itwould be when all the cells of the battery are in series. arranged torest upon intermediate contacts a greater or less number of cells orgroups of cells are in parallel relation while the remainder of thecells orgroups of cells are in series relation.

A, are auxiliary brushes.

It will be obvious to those skilled in the art to which my inventionappertains that' modifications may be made in detail without departingfrom the spirit thereof, hence the invention is not limited further thanthe prior state of the art may require, but

Having thus described the nature and objects of my Obviously when thearm 11, is

invention, what I claim as new and desire to secure by row is connectedto one of said strips and to one end of a battery section and whereofthe other contacts are connected with the cells or groups of cells ofthe batterysections, a movable arm provided with insulated bridge piecesadapted to cooperate with the strips and contacts, and means for movingthe arm, substantially as described.

In testimony whereof I have hereunto signed my name.

JOHN W. ACHARD.

Witnesses:

BRUCE Form, Gso. M. Howano.

